Question

For Bismuth (Bi), determine the mass of 139 protons.

Answer 1

Bismuth usually has 83 protons.
Its atomic mass is 208.98 or 209.00
209.00-83 protons=126 neutrons
139 protons+126 neutrons=265 atomic mass of Bi

Answer 2

@Shalante the answer is 1.631 x 10^-22 g

Answer 3

Can you screenshot the question to make sure it is not a series of question relating to this.

Answer 4

#34 For Bismuth (Bi), determine
Bi → Atomic # = 83
Atomic mass = 208.98

A. The number of atoms in 0.243 g (7.00 x 10^20 atoms)

Bi atoms / Avogadro’s # = 0.243 g / 208.98 g

Bi atoms = (0.243 g / 208.98 g) * 6.022 x 10^23

Bi atoms = 7.00 x 10^20

B. The mass of 139 protons (1.631 x 10^-22 g)

Answer 5

Hey....Look its simple, Mass of 1 proton=1.6726219 × 10-27 kilograms, So, Now,\[136\times1.6726219 × 10^{-27} kilograms=2.27\times10^{25}\]

Answer 6

I did that too but everything seems to fall close at 10^-22 range